18QHTF21-12.880-PD

Overview

The 18QHTF21-12.880-PD is a 12.88 MHz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates on a 1.8V supply voltage and utilizes LVCMOS output logic. The device features a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It includes a standby (power down) function for energy management. The component is designed for standard applications requiring precise clock signals within the specified operating temperature range.

Feature Summary

• Supports low voltage operation at 1.8V
• Integrates power down capability for standby mode
• Provides LVCMOS output signal compatibility

Applications

• Portable electronic devices requiring low power consumption
• Communication modules needing stable clock sources
• Embedded systems utilizing LVCMOS interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable and within the operational limits defined in the official datasheet. Ensure the PCB footprint matches the 2.0x1.6mm SMD package specifications to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a small form factor and low voltage operation are critical. The 1.8V specification makes it suitable for modern battery-powered applications. Consider the LVCMOS output level compatibility with your target microcontroller or FPGA inputs. The power-down feature adds value for systems requiring extended battery life through active sleep modes.

Part Context

This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and voltages. The 18 prefix indicates the 1.8V supply variant. The 21 suffix typically denotes the package size and pin configuration. This specific model provides a fixed 12.88 MHz frequency, commonly used in data communication standards.

Replacement Considerations

Direct replacements must match the 12.88 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify equivalent electrical parameters such as phase noise and jitter if available in competitor datasheets. Ensure the substitute component also supports the standby function if power management is required in the design.